GB815140A - Improvements in or relating to esters of metaboric acid - Google Patents

Improvements in or relating to esters of metaboric acid

Info

Publication number
GB815140A
GB815140A GB2244457A GB2244457A GB815140A GB 815140 A GB815140 A GB 815140A GB 2244457 A GB2244457 A GB 2244457A GB 2244457 A GB2244457 A GB 2244457A GB 815140 A GB815140 A GB 815140A
Authority
GB
United Kingdom
Prior art keywords
metaborate
butyl
chloroboronate
propyl
orthoborate
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB2244457A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of GB815140A publication Critical patent/GB815140A/en
Expired legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09KMATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K5/00Heat-transfer, heat-exchange or heat-storage materials, e.g. refrigerants; Materials for the production of heat or cold by chemical reactions other than by combustion
    • C09K5/08Materials not undergoing a change of physical state when used
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07FACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
    • C07F5/00Compounds containing elements of Groups 3 or 13 of the Periodic Table
    • C07F5/02Boron compounds
    • C07F5/04Esters of boric acids

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Combustion & Propulsion (AREA)
  • Thermal Sciences (AREA)
  • Materials Engineering (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

The invention comprises esters of metaboric acid of the formula <FORM:0815140/IV (b)/1> in which R is an alkyl radical containing 2 or more carbon atoms, preferably 2 to 12 carbon atoms. The novel compounds may be prepared from a dialkyl chloroboronate by heating, preferably at from 150 DEG to 250 DEG C. for 2 to 10 hours and at superatmospheric pressure if required, or by addition of a Lewis acid catalyst, such as ferric chloride or aluminium chloride, preferably in an amount of 0.1 to 10 per cent by weight based on the dialkyl chloroboronate. The esters of metaboric acid may also be prepared by heating an alkyl orthoborate with boron trioxide, preferably in the molar ratio 1 : 1 or with a slight excess of boron trioxide. The heating is suitably effected at a temperature greater than 100 DEG C., preferably in the range 150 DEG to 250 DEG C., and the reaction may be effected at superatmospheric pressure. In examples: (1) ethyl orthoborate and boron trioxide are heated at 250 DEG C. for 10 hours in a sealed glass tube to give ethyl metaborate; (2) diethyl chloroboronate is heated at 250 DEG C. for 10 hours in a sealed tube to give ethyl metaborate; (3) isopropyl orthoborate and boron trioxide are heated for 3 hours under reflux to give iso-propyl metaborate; (4) iso-propyl metaborate is obtained by heating di-iso-propyl chloroboronate at 200 DEG C. for 5 hours; (5) n-propyl metaborate is obtained from n-propyl orthoborate and boron trioxide as in (3); (6) n-propyl metaborate is obtained from di-n-propyl chloroboronate by the procedure of (2); (7) n-butyl orthoborate and boron trioxide are heated at 240 DEG C. for 8 hours to give n-butyl metaborate; (8) n-butyl metaborate is obtained from di-n-butyl chloroboronate by the procedure of (2); (9) di-n-butyl chloroboronate is treated with anhydrous ferric chloride to give n-butyl metaborate; (10) iso-butyl metaborate is obtained from isobutyl orthoborate and boron trioxide by the procedure of (7); (11) isobutyl metaborate is obtained from di-isobutyl chloroboronate by the procedure of (2); (12) sec-butyl metaborate is obtained from sec-butyl orthoborate and boron trioxide as in (7); (13) sec-butyl metaborate is obtained from di-sec-butyl chloroboronate and aluminium chloride by the procedure of (9).
GB2244457A 1957-07-16 Improvements in or relating to esters of metaboric acid Expired GB815140A (en)

Publications (1)

Publication Number Publication Date
GB815140A true GB815140A (en) 1959-06-17

Family

ID=1736968

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2244457A Expired GB815140A (en) 1957-07-16 Improvements in or relating to esters of metaboric acid

Country Status (1)

Country Link
GB (1) GB815140A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1189059B (en) * 1961-06-14 1965-03-18 Montedison Spa Process for the production of metaboric acid esters
US3253013A (en) * 1961-06-14 1966-05-24 Montedison Spa Esters of metaboric acid and process for the preparation thereof
DE1227455B (en) * 1964-04-06 1966-10-27 Stauffer Chemical Co Process for the preparation of boroxols
WO1998042802A1 (en) * 1997-03-20 1998-10-01 Pilkington Plc Boroxine compositions

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1189059B (en) * 1961-06-14 1965-03-18 Montedison Spa Process for the production of metaboric acid esters
US3253013A (en) * 1961-06-14 1966-05-24 Montedison Spa Esters of metaboric acid and process for the preparation thereof
DE1227455B (en) * 1964-04-06 1966-10-27 Stauffer Chemical Co Process for the preparation of boroxols
WO1998042802A1 (en) * 1997-03-20 1998-10-01 Pilkington Plc Boroxine compositions

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